Not at all. If you have it on dynamic, and you know the IP address that it has at the moment, you can still log into it using remote access.

I'm just saying that setting up static IP is a little more complicated, and rather than go to all that trouble, leave it dynamic. It's going to work just fine that way, with the only inconvenience being that the IP address could potentially change from time to time, but that's only relevant for logging into the router using remote access.

If you want to go static with it, you have to at least enter a subnet mask (255.255.255.0 should be OK) and the IP address of your router as both the DNS server and the Default Gateway. Once you enter that information, it should work.